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DashManifestModel.js
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DashManifestModel.js
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/**
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import Constants from '../../streaming/constants/Constants.js';
import DashConstants from '../constants/DashConstants.js';
import Representation from '../vo/Representation.js';
import AdaptationSet from '../vo/AdaptationSet.js';
import Period from '../vo/Period.js';
import Mpd from '../vo/Mpd.js';
import UTCTiming from '../vo/UTCTiming.js';
import Event from '../vo/Event.js';
import BaseURL from '../vo/BaseURL.js';
import EventStream from '../vo/EventStream.js';
import ProducerReferenceTime from '../vo/ProducerReferenceTime.js';
import ContentSteering from '../vo/ContentSteering.js';
import DescriptorType from '../vo/DescriptorType.js';
import ObjectUtils from '../../streaming/utils/ObjectUtils.js';
import URLUtils from '../../streaming/utils/URLUtils.js';
import FactoryMaker from '../../core/FactoryMaker.js';
import Debug from '../../core/Debug.js';
import DashJSError from '../../streaming/vo/DashJSError.js';
import Errors from '../../core/errors/Errors.js';
import MpdLocation from '../vo/MpdLocation.js';
import PatchLocation from '../vo/PatchLocation.js';
import ContentProtection from '../vo/ContentProtection.js';
function DashManifestModel() {
let instance,
logger,
errHandler,
BASE64;
const context = this.context;
const urlUtils = URLUtils(context).getInstance();
const isInteger = Number.isInteger || function (value) {
return typeof value === 'number' &&
isFinite(value) &&
Math.floor(value) === value;
};
function setup() {
logger = Debug(context).getInstance().getLogger(instance);
}
function getIsTypeOf(adaptation, type) {
if (!adaptation) {
throw new Error('adaptation is not defined');
}
if (!type) {
throw new Error('type is not defined');
}
// Check for thumbnail images
if (adaptation.Representation && adaptation.Representation.length) {
const essentialProperties = getEssentialPropertiesForRepresentation(adaptation.Representation[0]);
if (essentialProperties && essentialProperties.length > 0 && Constants.THUMBNAILS_SCHEME_ID_URIS.indexOf(essentialProperties[0].schemeIdUri) >= 0) {
return (type === Constants.IMAGE);
}
}
// Check ContentComponent.contentType
if (adaptation.ContentComponent && adaptation.ContentComponent.length > 0) {
if (adaptation.ContentComponent.length > 1) {
return (type === Constants.MUXED);
} else if (adaptation.ContentComponent[0].contentType === type) {
return true;
}
}
const mimeTypeRegEx = (type === Constants.TEXT) ? new RegExp('(ttml|vtt|wvtt|stpp)') : new RegExp(type);
// Check codecs
if (adaptation.Representation && adaptation.Representation.length) {
const codecs = adaptation.Representation[0].codecs;
if (mimeTypeRegEx.test(codecs)) {
return true;
}
}
// Check Adaptation's mimeType
if (adaptation.hasOwnProperty(DashConstants.MIME_TYPE)) {
return mimeTypeRegEx.test(adaptation.mimeType);
}
// Check Representation's mimeType
if (adaptation.Representation) {
let representation;
for (let i = 0; i < adaptation.Representation.length; i++) {
representation = adaptation.Representation[i];
if (representation.hasOwnProperty(DashConstants.MIME_TYPE)) {
return mimeTypeRegEx.test(representation.mimeType);
}
}
}
return false;
}
function getIsFragmented(adaptation) {
if (!adaptation) {
throw new Error('adaptation is not defined');
}
if (adaptation.hasOwnProperty(DashConstants.SEGMENT_TEMPLATE) ||
adaptation.hasOwnProperty(DashConstants.SEGMENT_TIMELINE) ||
adaptation.hasOwnProperty(DashConstants.SEGMENT_LIST) ||
adaptation.hasOwnProperty(DashConstants.SEGMENT_BASE)) {
return true;
}
if (adaptation.Representation && adaptation.Representation.length > 0) {
const representation = adaptation.Representation[0];
if (representation.hasOwnProperty(DashConstants.SEGMENT_TEMPLATE) ||
representation.hasOwnProperty(DashConstants.SEGMENT_TIMELINE) ||
representation.hasOwnProperty(DashConstants.SEGMENT_LIST) ||
representation.hasOwnProperty(DashConstants.SEGMENT_BASE)) {
return true;
}
}
return false;
}
function getIsAudio(adaptation) {
return getIsTypeOf(adaptation, Constants.AUDIO);
}
function getIsVideo(adaptation) {
return getIsTypeOf(adaptation, Constants.VIDEO);
}
function getIsText(adaptation) {
return getIsTypeOf(adaptation, Constants.TEXT);
}
function getIsMuxed(adaptation) {
return getIsTypeOf(adaptation, Constants.MUXED);
}
function getIsImage(adaptation) {
return getIsTypeOf(adaptation, Constants.IMAGE);
}
function getProducerReferenceTimesForAdaptation(adaptation) {
const prtArray = adaptation && adaptation.hasOwnProperty(DashConstants.PRODUCER_REFERENCE_TIME) ? adaptation[DashConstants.PRODUCER_REFERENCE_TIME] : [];
// ProducerReferenceTime elements can also be contained in Representations
const representationsArray = adaptation && adaptation.hasOwnProperty(DashConstants.REPRESENTATION) ? adaptation[DashConstants.REPRESENTATION] : [];
representationsArray.forEach((rep) => {
if (rep.hasOwnProperty(DashConstants.PRODUCER_REFERENCE_TIME)) {
prtArray.push(...rep[DashConstants.PRODUCER_REFERENCE_TIME]);
}
});
const prtsForAdaptation = [];
// Unlikely to have multiple ProducerReferenceTimes.
prtArray.forEach((prt) => {
const entry = new ProducerReferenceTime();
if (prt.hasOwnProperty(DashConstants.ID)) {
entry[DashConstants.ID] = prt[DashConstants.ID];
} else {
// Ignore. Missing mandatory attribute
return;
}
if (prt.hasOwnProperty(DashConstants.WALL_CLOCK_TIME)) {
entry[DashConstants.WALL_CLOCK_TIME] = prt[DashConstants.WALL_CLOCK_TIME];
} else {
// Ignore. Missing mandatory attribute
return;
}
if (prt.hasOwnProperty(DashConstants.PRESENTATION_TIME)) {
entry[DashConstants.PRESENTATION_TIME] = prt[DashConstants.PRESENTATION_TIME];
} else {
// Ignore. Missing mandatory attribute
return;
}
if (prt.hasOwnProperty(DashConstants.INBAND)) {
entry[DashConstants.INBAND] = prt[DashConstants.INBAND] !== 'false';
}
if (prt.hasOwnProperty(DashConstants.TYPE)) {
entry[DashConstants.TYPE] = prt[DashConstants.TYPE];
}
// Not interested in other attributes for now
// UTC element contained must be same as that in the MPD
prtsForAdaptation.push(entry);
})
return prtsForAdaptation;
}
function getLanguageForAdaptation(adaptation) {
let lang = '';
if (adaptation && adaptation.hasOwnProperty(DashConstants.LANG)) {
lang = adaptation.lang;
}
return lang;
}
function getViewpointForAdaptation(adaptation) {
if (!adaptation || !adaptation.hasOwnProperty(DashConstants.VIEWPOINT) || !adaptation[DashConstants.VIEWPOINT].length) return [];
return adaptation[DashConstants.VIEWPOINT].map(viewpoint => {
const vp = new DescriptorType();
vp.init(viewpoint);
return vp
});
}
function getRolesForAdaptation(adaptation) {
if (!adaptation || !adaptation.hasOwnProperty(DashConstants.ROLE) || !adaptation[DashConstants.ROLE].length) return [];
return adaptation[DashConstants.ROLE].map(role => {
const r = new DescriptorType();
r.init(role);
return r
});
}
function getAccessibilityForAdaptation(adaptation) {
if (!adaptation || !adaptation.hasOwnProperty(DashConstants.ACCESSIBILITY) || !adaptation[DashConstants.ACCESSIBILITY].length) return [];
return adaptation[DashConstants.ACCESSIBILITY].map(accessibility => {
const a = new DescriptorType();
a.init(accessibility);
return a
});
}
function getAudioChannelConfigurationForAdaptation(adaptation) {
if (!adaptation || !adaptation.hasOwnProperty(DashConstants.AUDIO_CHANNEL_CONFIGURATION) || !adaptation[DashConstants.AUDIO_CHANNEL_CONFIGURATION].length) return [];
return adaptation[DashConstants.AUDIO_CHANNEL_CONFIGURATION].map(audioChanCfg => {
const acc = new DescriptorType();
acc.init(audioChanCfg);
return acc
});
}
function getAudioChannelConfigurationForRepresentation(representation) {
if (!representation || !representation.hasOwnProperty(DashConstants.AUDIO_CHANNEL_CONFIGURATION) || !representation[DashConstants.AUDIO_CHANNEL_CONFIGURATION].length) return [];
return representation[DashConstants.AUDIO_CHANNEL_CONFIGURATION].map(audioChanCfg => {
const acc = new DescriptorType();
acc.init(audioChanCfg);
return acc
});
}
function getRepresentationSortFunction() {
return (a, b) => a.bandwidth - b.bandwidth;
}
function processAdaptation(realAdaptation) {
if (realAdaptation && realAdaptation.Representation) {
realAdaptation.Representation.sort(getRepresentationSortFunction());
}
return realAdaptation;
}
function getRealAdaptations(manifest, periodIndex) {
return manifest && manifest.Period && isInteger(periodIndex) ? manifest.Period[periodIndex] ? manifest.Period[periodIndex].AdaptationSet : [] : [];
}
function getRealPeriods(manifest) {
return manifest && manifest.Period ? manifest.Period : [];
}
function getRealPeriodForIndex(index, manifest) {
const realPeriods = getRealPeriods(manifest);
if (realPeriods.length > 0 && isInteger(index)) {
return realPeriods[index];
} else {
return null;
}
}
function getAdaptationForId(id, manifest, periodIndex) {
const realAdaptations = getRealAdaptations(manifest, periodIndex);
let i,
len;
for (i = 0, len = realAdaptations.length; i < len; i++) {
if (realAdaptations[i].hasOwnProperty(DashConstants.ID) && realAdaptations[i].id === id) {
return realAdaptations[i];
}
}
return null;
}
function getAdaptationForIndex(index, manifest, periodIndex) {
const realAdaptations = getRealAdaptations(manifest, periodIndex);
if (realAdaptations.length > 0 && isInteger(index)) {
return realAdaptations[index];
} else {
return null;
}
}
function getIndexForAdaptation(realAdaptation, manifest, periodIndex) {
if (!realAdaptation) {
return -1;
}
const realAdaptations = getRealAdaptations(manifest, periodIndex);
for (let i = 0; i < realAdaptations.length; i++) {
let objectUtils = ObjectUtils(context).getInstance();
if (objectUtils.areEqual(realAdaptations[i], realAdaptation)) {
return i;
}
}
return -1;
}
function getAdaptationsForType(manifest, periodIndex, type) {
const realAdaptations = getRealAdaptations(manifest, periodIndex);
let i,
len;
const adaptations = [];
for (i = 0, len = realAdaptations.length; i < len; i++) {
if (getIsTypeOf(realAdaptations[i], type)) {
adaptations.push(processAdaptation(realAdaptations[i]));
}
}
return adaptations;
}
function getCodec(adaptation, representationId, addResolutionInfo) {
let codec = null;
if (adaptation && adaptation.Representation && adaptation.Representation.length > 0) {
const representation = isInteger(representationId) && representationId >= 0 && representationId < adaptation.Representation.length ?
adaptation.Representation[representationId] : adaptation.Representation[0];
if (representation) {
codec = representation.mimeType + ';codecs="' + representation.codecs + '"';
if (addResolutionInfo && representation.width !== undefined) {
codec += ';width="' + representation.width + '";height="' + representation.height + '"';
}
}
}
// If the codec contains a profiles parameter we remove it. Otherwise, it will cause problems when checking for codec capabilities of the platform
if (codec) {
codec = codec.replace(/\sprofiles=[^;]*/g, '');
}
return codec;
}
function getMimeType(adaptation) {
return adaptation && adaptation.Representation && adaptation.Representation.length > 0 ? adaptation.Representation[0].mimeType : null;
}
function getSegmentAlignment(adaptation) {
if (adaptation && adaptation.hasOwnProperty(DashConstants.SEGMENT_ALIGNMENT)) {
return adaptation[DashConstants.SEGMENT_ALIGNMENT] === 'true'
}
return false
}
function getSubSegmentAlignment(adaptation) {
if (adaptation && adaptation.hasOwnProperty(DashConstants.SUB_SEGMENT_ALIGNMENT)) {
return adaptation[DashConstants.SUB_SEGMENT_ALIGNMENT] === 'true'
}
return false
}
function getLabelsForAdaptation(adaptation) {
if (!adaptation || !adaptation.Label) {
return [];
}
const labelArray = [];
for (let i = 0; i < adaptation.Label.length; i++) {
labelArray.push({
lang: adaptation.Label[i].lang,
text: adaptation.Label[i].__text || adaptation.Label[i]
});
}
return labelArray;
}
function isPeriodEncrypted(period) {
const contentProtectionElements = getContentProtectionByPeriod(period);
return contentProtectionElements && contentProtectionElements.length > 0;
}
function getContentProtectionByManifest(manifest) {
let protectionElements = [];
if (!manifest) {
return protectionElements
}
const mpdElements = _getContentProtectionFromElement(manifest);
protectionElements = protectionElements.concat(mpdElements);
if (manifest.hasOwnProperty(DashConstants.PERIOD) && manifest[DashConstants.PERIOD].length > 0) {
manifest[DashConstants.PERIOD].forEach((period) => {
const curr = getContentProtectionByPeriod(period)
protectionElements = protectionElements.concat(curr);
})
}
return protectionElements
}
function getContentProtectionByPeriod(period) {
let protectionElements = [];
if (!period) {
return protectionElements
}
const periodProtectionElements = _getContentProtectionFromElement(period);
protectionElements = protectionElements.concat(periodProtectionElements);
if (period.hasOwnProperty(DashConstants.ADAPTATION_SET) && period[DashConstants.ADAPTATION_SET].length > 0) {
period[DashConstants.ADAPTATION_SET].forEach((as) => {
const curr = _getContentProtectionFromElement(as);
protectionElements = protectionElements.concat(curr);
})
}
return protectionElements
}
function getContentProtectionByAdaptation(adaptation) {
return _getContentProtectionFromElement(adaptation);
}
function _getContentProtectionFromElement(element) {
if (!element || !element.hasOwnProperty(DashConstants.CONTENT_PROTECTION) || element.ContentProtection.length === 0) {
return [];
}
return element[DashConstants.CONTENT_PROTECTION].map(contentProtectionData => {
const contentProtection = new ContentProtection();
contentProtection.init(contentProtectionData);
return contentProtection
});
}
function getIsDynamic(manifest) {
let isDynamic = false;
if (manifest && manifest.hasOwnProperty('type')) {
isDynamic = (manifest.type === DashConstants.DYNAMIC);
}
return isDynamic;
}
function getId(manifest) {
return (manifest && manifest[DashConstants.ID]) || null;
}
function hasProfile(manifest, profile) {
let has = false;
if (manifest && manifest.profiles && manifest.profiles.length > 0) {
has = (manifest.profiles.indexOf(profile) !== -1);
}
return has;
}
function getDuration(manifest) {
let mpdDuration;
//@mediaPresentationDuration specifies the duration of the entire Media Presentation.
//If the attribute is not present, the duration of the Media Presentation is unknown.
if (manifest && manifest.hasOwnProperty(DashConstants.MEDIA_PRESENTATION_DURATION)) {
mpdDuration = manifest.mediaPresentationDuration;
} else if (manifest && manifest.type == 'dynamic') {
mpdDuration = Number.POSITIVE_INFINITY;
} else {
mpdDuration = Number.MAX_SAFE_INTEGER || Number.MAX_VALUE;
}
return mpdDuration;
}
function getBandwidth(representation) {
return representation && representation.bandwidth ? representation.bandwidth : NaN;
}
function getManifestUpdatePeriod(manifest, latencyOfLastUpdate = 0) {
let delay = NaN;
if (manifest && manifest.hasOwnProperty(DashConstants.MINIMUM_UPDATE_PERIOD)) {
delay = manifest.minimumUpdatePeriod;
}
return isNaN(delay) ? delay : Math.max(delay - latencyOfLastUpdate, 1);
}
function getPublishTime(manifest) {
return manifest && manifest.hasOwnProperty(DashConstants.PUBLISH_TIME) ? new Date(manifest[DashConstants.PUBLISH_TIME]) : null;
}
function getRepresentationCount(adaptation) {
return adaptation && adaptation.Representation ? adaptation.Representation.length : 0;
}
function getBitrateListForAdaptation(realAdaptation) {
const processedRealAdaptation = processAdaptation(realAdaptation);
const realRepresentations = processedRealAdaptation && processedRealAdaptation.Representation ? processedRealAdaptation.Representation : [];
return realRepresentations.map((realRepresentation) => {
return {
bandwidth: realRepresentation.bandwidth,
width: realRepresentation.width || 0,
height: realRepresentation.height || 0,
scanType: realRepresentation.scanType || null,
id: realRepresentation.id || null
};
});
}
function getSelectionPriority(realAdaption) {
try {
const priority = realAdaption && typeof realAdaption.selectionPriority !== 'undefined' ? parseInt(realAdaption.selectionPriority) : 1;
return isNaN(priority) ? 1 : priority;
} catch (e) {
return 1;
}
}
function getEssentialPropertiesForAdaptation(adaptation) {
if (!adaptation || !adaptation.hasOwnProperty(DashConstants.ESSENTIAL_PROPERTY) || !adaptation.EssentialProperty.length) return [];
return adaptation.EssentialProperty.map( essentialProperty => {
const s = new DescriptorType();
s.init(essentialProperty);
return s
});
}
function getEssentialPropertiesForRepresentation(realRepresentation) {
if (!realRepresentation || !realRepresentation.EssentialProperty || !realRepresentation.EssentialProperty.length) return [];
return realRepresentation.EssentialProperty.map((essentialProperty) => {
const s = new DescriptorType();
s.init(essentialProperty);
return s
});
}
function getRepresentationFor(index, adaptation) {
return adaptation && adaptation.Representation && adaptation.Representation.length > 0 &&
isInteger(index) ? adaptation.Representation[index] : null;
}
function getRealAdaptationFor(voAdaptation) {
if (voAdaptation && voAdaptation.period && isInteger(voAdaptation.period.index)) {
const periodArray = voAdaptation.period.mpd.manifest.Period[voAdaptation.period.index];
if (periodArray && periodArray.AdaptationSet && isInteger(voAdaptation.index)) {
return processAdaptation(periodArray.AdaptationSet[voAdaptation.index]);
}
}
}
function getRepresentationsForAdaptation(voAdaptation, mediaInfo) {
const voRepresentations = [];
const processedRealAdaptation = getRealAdaptationFor(voAdaptation);
let segmentInfo,
baseUrl;
if (processedRealAdaptation && processedRealAdaptation.Representation) {
// TODO: TO BE REMOVED. We should get just the baseUrl elements that affects to the representations
// that we are processing. Making it works properly will require much further changes and given
// parsing base Urls parameters is needed for our ultra low latency examples, we will
// keep this "tricky" code until the real (and good) solution comes
if (voAdaptation && voAdaptation.period && isInteger(voAdaptation.period.index)) {
const baseUrls = getBaseURLsFromElement(voAdaptation.period.mpd.manifest);
if (baseUrls) {
baseUrl = baseUrls[0];
}
}
for (let i = 0, len = processedRealAdaptation.Representation.length; i < len; ++i) {
const realRepresentation = processedRealAdaptation.Representation[i];
const voRepresentation = new Representation();
voRepresentation.index = i;
voRepresentation.adaptation = voAdaptation;
voRepresentation.mediaInfo = mediaInfo;
if (realRepresentation.hasOwnProperty(DashConstants.ID)) {
voRepresentation.id = realRepresentation.id;
}
if (realRepresentation.hasOwnProperty(DashConstants.CODECS)) {
voRepresentation.codecs = realRepresentation.codecs;
}
if (realRepresentation.hasOwnProperty(DashConstants.MIME_TYPE)) {
voRepresentation.mimeType = realRepresentation[DashConstants.MIME_TYPE];
}
if (realRepresentation.hasOwnProperty(DashConstants.CODEC_PRIVATE_DATA)) {
voRepresentation.codecPrivateData = realRepresentation.codecPrivateData;
}
if (realRepresentation.hasOwnProperty(DashConstants.BANDWITH)) {
voRepresentation.bandwidth = realRepresentation.bandwidth;
voRepresentation.bitrateInKbit = realRepresentation.bandwidth / 1000;
}
if (realRepresentation.hasOwnProperty(DashConstants.WIDTH)) {
voRepresentation.width = realRepresentation.width;
}
if (realRepresentation.hasOwnProperty(DashConstants.HEIGHT)) {
voRepresentation.height = realRepresentation.height;
}
if (realRepresentation.hasOwnProperty(DashConstants.SCAN_TYPE)) {
voRepresentation.scanType = realRepresentation.scanType;
}
if (realRepresentation.hasOwnProperty(DashConstants.QUALITY_RANKING)) {
voRepresentation.qualityRanking = realRepresentation[DashConstants.QUALITY_RANKING];
}
if (realRepresentation.hasOwnProperty(DashConstants.MAX_PLAYOUT_RATE)) {
voRepresentation.maxPlayoutRate = realRepresentation.maxPlayoutRate;
}
if (realRepresentation.hasOwnProperty(DashConstants.SEGMENT_BASE)) {
segmentInfo = realRepresentation.SegmentBase;
voRepresentation.segmentInfoType = DashConstants.SEGMENT_BASE;
} else if (realRepresentation.hasOwnProperty(DashConstants.SEGMENT_LIST)) {
segmentInfo = realRepresentation.SegmentList;
if (segmentInfo.hasOwnProperty(DashConstants.SEGMENT_TIMELINE)) {
voRepresentation.segmentInfoType = DashConstants.SEGMENT_TIMELINE;
} else {
voRepresentation.segmentInfoType = DashConstants.SEGMENT_LIST;
}
} else if (realRepresentation.hasOwnProperty(DashConstants.SEGMENT_TEMPLATE)) {
segmentInfo = realRepresentation.SegmentTemplate;
if (segmentInfo.hasOwnProperty(DashConstants.SEGMENT_TIMELINE)) {
voRepresentation.segmentInfoType = DashConstants.SEGMENT_TIMELINE;
} else {
voRepresentation.segmentInfoType = DashConstants.SEGMENT_TEMPLATE;
}
if (segmentInfo.hasOwnProperty(DashConstants.INITIALIZATION_MINUS)) {
voRepresentation.initialization = segmentInfo.initialization.split('$Bandwidth$')
.join(realRepresentation.bandwidth).split('$RepresentationID$').join(realRepresentation.id);
}
} else {
voRepresentation.segmentInfoType = DashConstants.BASE_URL;
}
voRepresentation.essentialProperties = getEssentialPropertiesForRepresentation(realRepresentation);
if (segmentInfo) {
if (segmentInfo.hasOwnProperty(DashConstants.INITIALIZATION)) {
const initialization = segmentInfo.Initialization;
if (initialization.hasOwnProperty(DashConstants.SOURCE_URL)) {
voRepresentation.initialization = initialization.sourceURL;
}
if (initialization.hasOwnProperty(DashConstants.RANGE)) {
voRepresentation.range = initialization.range;
// initialization source url will be determined from
// BaseURL when resolved at load time.
}
} else if (getIsText(processedRealAdaptation) &&
getIsFragmented(processedRealAdaptation) &&
processedRealAdaptation.mimeType &&
processedRealAdaptation.mimeType.indexOf('application/mp4') === -1) {
voRepresentation.range = 0;
}
if (segmentInfo.hasOwnProperty(DashConstants.TIMESCALE)) {
voRepresentation.timescale = segmentInfo.timescale;
}
if (segmentInfo.hasOwnProperty(DashConstants.DURATION)) {
// TODO according to the spec @maxSegmentDuration specifies the maximum duration of any Segment in any Representation in the Media Presentation
// It is also said that for a SegmentTimeline any @d value shall not exceed the value of MPD@maxSegmentDuration, but nothing is said about
// SegmentTemplate @duration attribute. We need to find out if @maxSegmentDuration should be used instead of calculated duration if the the duration
// exceeds @maxSegmentDuration
voRepresentation.segmentDuration = segmentInfo.duration / voRepresentation.timescale;
} else if (realRepresentation.hasOwnProperty(DashConstants.SEGMENT_TEMPLATE)) {
segmentInfo = realRepresentation.SegmentTemplate;
if (segmentInfo.hasOwnProperty(DashConstants.SEGMENT_TIMELINE)) {
voRepresentation.segmentDuration = calcSegmentDuration(segmentInfo.SegmentTimeline) / voRepresentation.timescale;
}
}
if (segmentInfo.hasOwnProperty(DashConstants.MEDIA)) {
voRepresentation.media = segmentInfo.media;
}
if (segmentInfo.hasOwnProperty(DashConstants.START_NUMBER)) {
voRepresentation.startNumber = parseInt(segmentInfo.startNumber);
}
if (segmentInfo.hasOwnProperty(DashConstants.INDEX_RANGE)) {
voRepresentation.indexRange = segmentInfo.indexRange;
}
if (segmentInfo.hasOwnProperty(DashConstants.PRESENTATION_TIME_OFFSET)) {
voRepresentation.presentationTimeOffset = segmentInfo.presentationTimeOffset / voRepresentation.timescale;
}
if (segmentInfo.hasOwnProperty(DashConstants.AVAILABILITY_TIME_OFFSET)) {
voRepresentation.availabilityTimeOffset = segmentInfo.availabilityTimeOffset;
} else if (baseUrl && baseUrl.availabilityTimeOffset !== undefined) {
voRepresentation.availabilityTimeOffset = baseUrl.availabilityTimeOffset;
}
if (segmentInfo.hasOwnProperty(DashConstants.AVAILABILITY_TIME_COMPLETE)) {
voRepresentation.availabilityTimeComplete = segmentInfo.availabilityTimeComplete !== 'false';
} else if (baseUrl && baseUrl.availabilityTimeComplete !== undefined) {
voRepresentation.availabilityTimeComplete = baseUrl.availabilityTimeComplete;
}
}
voRepresentation.mseTimeOffset = calcMseTimeOffset(voRepresentation);
voRepresentation.path = [voAdaptation.period.index, voAdaptation.index, i];
voRepresentations.push(voRepresentation);
}
}
return voRepresentations;
}
function calcSegmentDuration(segmentTimeline) {
if (!segmentTimeline || !segmentTimeline.S) {
return NaN;
}
let s0 = segmentTimeline.S[0];
let s1 = segmentTimeline.S[1];
return s0.hasOwnProperty('d') ? s0.d : (s1.t - s0.t);
}
function calcMseTimeOffset(representation) {
// The MSEOffset is offset from AST for media. It is Period@start - presentationTimeOffset
const presentationOffset = representation.presentationTimeOffset;
const periodStart = representation.adaptation.period.start;
return (periodStart - presentationOffset);
}
function getAdaptationsForPeriod(voPeriod) {
const realPeriod = voPeriod && isInteger(voPeriod.index) ? voPeriod.mpd.manifest.Period[voPeriod.index] : null;
const voAdaptations = [];
let voAdaptationSet,
realAdaptationSet,
i;
if (realPeriod && realPeriod.AdaptationSet) {
for (i = 0; i < realPeriod.AdaptationSet.length; i++) {
realAdaptationSet = realPeriod.AdaptationSet[i];
voAdaptationSet = new AdaptationSet();
if (realAdaptationSet.hasOwnProperty(DashConstants.ID)) {
voAdaptationSet.id = realAdaptationSet.id;
}
voAdaptationSet.index = i;
voAdaptationSet.period = voPeriod;
if (getIsMuxed(realAdaptationSet)) {
voAdaptationSet.type = Constants.MUXED;
} else if (getIsAudio(realAdaptationSet)) {
voAdaptationSet.type = Constants.AUDIO;
} else if (getIsVideo(realAdaptationSet)) {
voAdaptationSet.type = Constants.VIDEO;
} else if (getIsText(realAdaptationSet)) {
voAdaptationSet.type = Constants.TEXT;
} else if (getIsImage(realAdaptationSet)) {
voAdaptationSet.type = Constants.IMAGE;
} else {
logger.warn('Unknown Adaptation stream type');
}
voAdaptations.push(voAdaptationSet);
}
}
return voAdaptations;
}
function getRegularPeriods(mpd) {
const isDynamic = mpd ? getIsDynamic(mpd.manifest) : false;
const voPeriods = [];
let realPreviousPeriod = null;
let realPeriod = null;
let voPreviousPeriod = null;
let voPeriod = null;
let len,
i;
for (i = 0, len = mpd && mpd.manifest && mpd.manifest.Period ? mpd.manifest.Period.length : 0; i < len; i++) {
realPeriod = mpd.manifest.Period[i];
// If the attribute @start is present in the Period, then the
// Period is a regular Period and the PeriodStart is equal
// to the value of this attribute.
if (realPeriod.hasOwnProperty(DashConstants.START)) {
voPeriod = new Period();
voPeriod.start = realPeriod.start;
}
// If the @start attribute is absent, but the previous Period element contains a @duration attribute then this new Period is also a regular Period. The start time of the new Period PeriodStart is the sum of the start time of the previous Period PeriodStart and the value of the attribute @duration of the previous Period.
else if (realPreviousPeriod !== null && realPreviousPeriod.hasOwnProperty(DashConstants.DURATION) && voPreviousPeriod !== null) {
voPeriod = new Period();
voPeriod.start = parseFloat((voPreviousPeriod.start + voPreviousPeriod.duration).toFixed(5));
}
// If (i) @start attribute is absent, and (ii) the Period element is the first in the MPD, and (iii) the MPD@type is 'static', then the PeriodStart time shall be set to zero.
else if (i === 0 && !isDynamic) {
voPeriod = new Period();
voPeriod.start = 0;
}
// The Period extends until the PeriodStart of the next Period.
// The difference between the PeriodStart time of a Period and
// the PeriodStart time of the following Period.
if (voPreviousPeriod !== null && isNaN(voPreviousPeriod.duration)) {
if (voPeriod !== null) {
voPreviousPeriod.duration = parseFloat((voPeriod.start - voPreviousPeriod.start).toFixed(5));
} else {
logger.warn('First period duration could not be calculated because lack of start and duration period properties. This will cause timing issues during playback');
}
}
if (voPeriod !== null) {
voPeriod.id = getPeriodId(realPeriod, i);
voPeriod.index = i;
voPeriod.mpd = mpd;
voPeriod.isEncrypted = isPeriodEncrypted(realPeriod);
if (realPeriod.hasOwnProperty(DashConstants.DURATION)) {
voPeriod.duration = realPeriod.duration;
}
if (voPreviousPeriod) {
voPreviousPeriod.nextPeriodId = voPeriod.id;
}
voPeriods.push(voPeriod);
realPreviousPeriod = realPeriod;
voPreviousPeriod = voPeriod;
}
realPeriod = null;
voPeriod = null;
}
if (voPeriods.length === 0) {
return voPeriods;
}
// The last Period extends until the end of the Media Presentation.
// The difference between the PeriodStart time of the last Period
// and the mpd duration
if (voPreviousPeriod !== null && isNaN(voPreviousPeriod.duration)) {
voPreviousPeriod.duration = parseFloat((getEndTimeForLastPeriod(voPreviousPeriod) - voPreviousPeriod.start).toFixed(5));
}
return voPeriods;
}
function getPeriodId(realPeriod, i) {
if (!realPeriod) {
throw new Error('Period cannot be null or undefined');
}
let id = Period.DEFAULT_ID + '_' + i;
if (realPeriod.hasOwnProperty(DashConstants.ID) && realPeriod.id.toString().length > 0 && realPeriod.id !== '__proto__') {
id = realPeriod.id.toString();
}
return id;
}
function getMpd(manifest) {
const mpd = new Mpd();
if (manifest) {
mpd.manifest = manifest;
if (manifest.hasOwnProperty(DashConstants.AVAILABILITY_START_TIME)) {
mpd.availabilityStartTime = new Date(manifest.availabilityStartTime.getTime());
} else {
if (manifest.loadedTime) {
mpd.availabilityStartTime = new Date(manifest.loadedTime.getTime());
}
}
if (manifest.hasOwnProperty(DashConstants.AVAILABILITY_END_TIME)) {
mpd.availabilityEndTime = new Date(manifest.availabilityEndTime.getTime());
}
if (manifest.hasOwnProperty(DashConstants.MINIMUM_UPDATE_PERIOD)) {
mpd.minimumUpdatePeriod = manifest.minimumUpdatePeriod;
}
if (manifest.hasOwnProperty(DashConstants.MEDIA_PRESENTATION_DURATION)) {
mpd.mediaPresentationDuration = manifest.mediaPresentationDuration;
}
if (manifest.hasOwnProperty(DashConstants.SUGGESTED_PRESENTATION_DELAY)) {
mpd.suggestedPresentationDelay = manifest.suggestedPresentationDelay;
}
if (manifest.hasOwnProperty(DashConstants.TIMESHIFT_BUFFER_DEPTH)) {
mpd.timeShiftBufferDepth = manifest.timeShiftBufferDepth;
}
if (manifest.hasOwnProperty(DashConstants.MAX_SEGMENT_DURATION)) {
mpd.maxSegmentDuration = manifest.maxSegmentDuration;
}
if (manifest.hasOwnProperty(DashConstants.PUBLISH_TIME)) {
mpd.publishTime = new Date(manifest.publishTime);
}
}
return mpd;
}
function checkConfig() {
if (!errHandler || !errHandler.hasOwnProperty('error')) {
throw new Error(Constants.MISSING_CONFIG_ERROR);
}
}
function getEndTimeForLastPeriod(voPeriod) {
checkConfig();
const isDynamic = getIsDynamic(voPeriod.mpd.manifest);
let periodEnd;
if (voPeriod.mpd.manifest.mediaPresentationDuration) {
periodEnd = voPeriod.mpd.manifest.mediaPresentationDuration;
} else if (voPeriod.duration) {
periodEnd = voPeriod.duration;
} else if (isDynamic) {
periodEnd = Number.POSITIVE_INFINITY;
} else {
errHandler.error(new DashJSError(Errors.MANIFEST_ERROR_ID_PARSE_CODE, 'Must have @mediaPresentationDuration on MPD or an explicit @duration on the last period.', voPeriod));
}
return periodEnd;
}
function getEventsForPeriod(period) {
const manifest = period && period.mpd && period.mpd.manifest ? period.mpd.manifest : null;
const periodArray = manifest ? manifest.Period : null;
const eventStreams = periodArray && period && isInteger(period.index) ? periodArray[period.index].EventStream : null;
const events = [];
let i,
j;
if (eventStreams) {
for (i = 0; i < eventStreams.length; i++) {
const eventStream = new EventStream();
eventStream.period = period;
eventStream.timescale = 1;
if (eventStreams[i].hasOwnProperty(Constants.SCHEME_ID_URI)) {
eventStream.schemeIdUri = eventStreams[i][Constants.SCHEME_ID_URI];
} else {
throw new Error('Invalid EventStream. SchemeIdUri has to be set');
}
if (eventStreams[i].hasOwnProperty(DashConstants.TIMESCALE)) {
eventStream.timescale = eventStreams[i][DashConstants.TIMESCALE];
}
if (eventStreams[i].hasOwnProperty(DashConstants.VALUE)) {
eventStream.value = eventStreams[i][DashConstants.VALUE];
}
if (eventStreams[i].hasOwnProperty(DashConstants.PRESENTATION_TIME_OFFSET)) {
eventStream.presentationTimeOffset = eventStreams[i][DashConstants.PRESENTATION_TIME_OFFSET];
}
for (j = 0; eventStreams[i].Event && j < eventStreams[i].Event.length; j++) {